Engine-cooling system



Sept. 11, 1928. 1,683,602

r c. P. BROCKWAY ENGINE COOLING SYSTEM Filed April 11. 192135heets-Sheet 1 Illlllliiium INVENTOR. I G'ar/ R Eros/rway BY -4, I

ATTORNEYS.

C. P. BROCKWAY ENGINE COOLING SYSTEM Sept. 11, 1928.

s Sheets-Sheet 6 Filed April 11. 1921 INVENTOR. Cor/ I? Brock BY way ATTORNEYS.

Patented Sept. 11, 1928.

UNITED STATES 1,683,602 PATENT OFFICE.

CARL P. BROOKWA.Y, OI TOLEDO, OHIO, ASSIGNOR TO INDUSTRIAL RESEARCH COR-PORATION, OF TOLEDO, OHIO, A

.COBPOBATION OF DELAWARE.

ENGINE-COOLING SYSTEM.

a lication, med April 11,

The-present invention relates to a novel system of cooling an enginewhereby a forced circulation of air is made around the engine, itscylinders, and the appurtenances thereof, in such a way and by suchmeans as to greatly increase the eflic1ency in cooling the engine,wherein air may be forced, v by power operated means, or by the movementof a vehicle upon which the engine 1s used, to pass transversely of theengine cylinder or. cylinders rather than longitudlnally up or down thesurface of the cyhnders. In this way travel of the an 1n contact withthe heated surfaces is reduced and thereby a large increase in thevolume of fresh-cooling air passing the cylmders 1s caused thusoperating to increase the rate of heat exchange and permitting forexample, a more efficient arrangement of heat cooling fins for the clinders, and having other advantages. Tlie invention further has for itsobject a system of this character arranged to more equally cool theheated areas of a cylinder or plurality of cylinders and for equallycooling the'several cylinders if more than one be used, the arrangementas a whole having been found to produce unex-. pected and importantresults in the a1r cooling of an engine, possibly by preventingadistortion of warping of any parts by reason of unequal heat dissipationheretofore unavoidable.

The present invention also has for ts object a'novel system of coollngas ndlcated, 1n which .the clrculation of the air 15 made to assist incooling the exhaust of the cyl1nder and has a definite circulation withre.- gard to the arrangement of cylinder and exhaust to produce whathave'been found to be highly advantageous results. The invention alsoincludes a novel and slmphfied arrangement of casing for conducting theair in the required direction of circulation to obtain the resultsindicated, the shape of the same and the location of the forced meansfor obtaining circulation also being features of the invention.

The invention includes a novel method of cooling by which the resultsindicated above are obtained as well as the apparatus, arrangement ofelements, and structure suggested.

Other objects and those relating to economies of manufacture will appearherein as I proceed with a detailed description of.

1921. Serial No. 460,566.

that particular .embodiment of my invention whlch for the purposes ofillustration I have shown in the accompanying drawings Figure V is atransverse section of the modification of Figure III showing the outlineof the fan wheel blades.

Figure VI is a sectional view taken on the hue 66 of Fig. V.

For the purpose of illustrating the principle of the method and meansconstituting the present invention I have shown in Figures I and II anengine 10 includinga plu rality of cylinders 11, 12, 13, and 14, theengine being suitably mounted'on a frame 15 in any desired manner. Thefly-wheel 16 for theengine has connected thereto a fan or blower 17 of at pe illustrated, consistmg of a plurality'o vanes 18, as shown inFigure I. The fly-wheel and fan are pro-,

vided with a housing 20 having a plurality of circumferentially arrangedopenings 21 relatively near the head of the blower, whereby air may bedrawn into the housing centrally of the fly-wheel 'fan to be dis.-charged peripherally thereof. Associated with the fan housin andconnected integrally therewith or ormed separately and attached thereto,is an air receivingcasing 22 sha ed as shown in Figure I to provide .Thecasing 24 may be made of sheet metal if desired and extend across thefront cylinder 11 and to the oppositeside of the'cylinders to completelyencase and house the same. The casing 24 may be flanged as at 25 tofacilitate connection with the en ine casing or housing 22 for theflywheel. lhe casing 24 is arranged to aduall decrease the space betweenit an the cy 'nders as the same approaches the cylinders most remotefrom those adjacent the entrance of the air from the chamber 23. Thiswill facilitate' equal distribution of air for each of \the severalcylinders. On the exhaust side 26 of the casing 24 the casing isprovided with a plurality of openin s 27. It is a parent that th1s sideof the casing mig t well be left open entirely but I am able to soarrange the outlet openings for the air as to have an importantadvantage of drawing the air forced through the casing up,- ward aroundthe head of the cylinder or hottest part thereof. This has an importantfunction in connection with my improved system of cooling, in that itequally cools t e Entire cylinder as will be readily understoo Theexhaust pipe 28 for the engine cylin ders in the embodiment of theinvention illustrated in Figures I and II, is in the path of the exhaustof the air after it has passed the several c linders, as shown in Fig.II.

In the emodiment of my invention illustrated in Figures III'and V theexit ports 27 are on the side 29 of the casing 15 opposite to theexhaust pipe 28 see Fig. V, so that the air current moves from thefan'directly against the exhaust ports and as the exhaust side of thecylinders are hottest and since the air is coo est just prior to contactwith the exhaust ortions the cooling effect is greatest at t ese pointsand an equable diminution of temperature secured for the whole cylinder.

Similarly as in the modification of Figure II the casing is formed so asto have a decreasing volume as the cylinder 11 is approached the wall 30being inclined from the fly-wlieel towardthe engine. In order to assistfurther the distribution of the air current use is made in both forms ofthe invention of guiding plates 31 between each cylinder for the purposeof forcin the transverse air currents into restricte passage ways closeto the cylinders. This movement is also aided by means of wings 32extending circumferentially about the cylinders for a limited distanceand formed integral-with the plates 31 so that the air in its movementis forced to pass between the ribs of the adjacent cylinders where thegreatest cooling action may result.

In Figs. III, V, and VI, I have shown,

another form of combined fly wheel and fan which I have found to be 'versatisfactory. This fly wheel has a soli web, 38, which is curvedrearwardly, that is, toward the engine, as it approaches the peripheryof the wheel. The curvature of this web will be apparent from thesection, Fi VI. The wheel has a plurality of radialy arranged ribs, 35,which form the blades of the fan. The rear faces of these ribs aresubstantially straight or radial, as seen in Fig. V, and the forward orleading faces, 36, of the blades are curved forwardly with a curvaturewhich increases as the periphery of the wheel is approached. The forwardedges of the blades lie in a single plane and these blades or ribs mergeinto the web 38, as they approach the center of the wheel, see Figs. V.and VI. The width of the blades increases as the periphery of the wheelis approached, due to the curvature of the web 38, the wheel has theannular circumferential band 41, integral therewith and arranged in theplane of the forward ed es of the ribs 35. This band 41 the we 38, andthe forward and rear faces of'the blades form curved channels throu hwhich air is discharged peripherally of t e wheel.

In operation, air is drawn in at .the central portion of the wheel, cauht and directed centrifugally by the bl es 35, and discharged throughthe channels at the periphery of the wheel. The blades, 35, and band 41,may be cast integral with the web 38, but I am not to be restricted tothis construction. It will be observed that the ribs 35, increase inthickness toward the periphery givin the peripheral weight necessary forthe w eel to function properly as a fly wheel.

While I'have illustrated and described in more or less detail a certainembodiment of my invention I do not wish to be limited thereto, asvarious other modifications and arrangements will be obvious to thoseskilled in the art without departing from the scope of my invention.Therefore I desire to claim my invention broadl as well as specificallyas indicated by t e appended claims.

What I claim is:

1. Means for cooling an engine having a lurality of cylinders providedwith heat issipating fins, including a fan driven by the engine, ahousing for said fan, said housing being provided with openingspermitting 1 air to be drawn therein centrally of said fan,

a receiving chamber having a gradually increasing volume at a portion ofthe eriphcry of said fan to receive said air, and a casing surroundinsaid cylinders and forming a conduit for eading said air along one sideof said plurality of cylinders and transversel of said cylinders, saidcasing being provi ed with outlet openings on the opposite side of saidcylinders from said conduit and so arranged as to provide for avariation in the passage of air across said c linders in order toequally cool the variably heated portions thereof.

2. Means for cooling an engine provided with plurality of c linders,including an air forcing device, a d scharge chamber for said air, and acasing for said cylinders gradually tapering from the intake c-ndthereof to the other end of the engineto provide means for passing saidair along one side of said cylinders and then transversely thereof pasteach cylinder equally, saidcasmg extendlng from top to bottom of saidcylinders, the side of i the casing adjacent the top and opposite thetapered side of the casing being apertured to form outlets for" the aircurrents.

'3, Means for cooling an engine having a plurality of cylinders providedwith heat dissipating fins, including an engine driven fan, a housingfor said fan, said housing having a peripheral discharge for said fan,

' and a casing surrounding said cylinders and forming a conduitconnecting with said discharge for leading the air along one side ofsaid cylinders and then transversely and vertically thereof, said casinbeing provided with outlet openings on ,t e opposite side of saidcylinders from said conduit adjacent .zifthe top. I 4. In aninternalcombustion en ine, the

r combination of a plurality of cylin ershaving exhaust valves, a blowerarranged at one end of said en ine, and a casing surrounding said cyliners and having one side wall, spaced from said cylinders to forman airconduit into which said blower discharges,

said conduit extending along one side of the group of cylinders, andsaid casing being provided with air'discharge openings 'u on theopposite side of said group of cylin ers from said conduit adjacent thecylinder exhaust valves. e

5. The combination with an internal com- 4 bustion engine having apluralit of cylinders each provided" with heat ra 'i'ating fins disposedin planes perpendicular to the axes of said cylinders, of a blowerdriven by said en ine,-and a casing surrounding said cylin ers andhaving one wall spaced therefrom to provide an air conduit 1nto whichsaid blower dischar es and which extends along one side of sai group ofcylinders, the opposite wall of sald casing being perforated adjacentthe upper end of said fins to permit the discharge of air therefrom.

6. The combination with an internal combustion en ine having'a pluralityof cylinders provid posed in planes perpendicular to the axes of saidcylinders, of a blower driven by said envine, and a casing surroundingsaid cylinders and having-one wall spaced therefrom to form an airconduit, extending along one side of the group of cylinders and intowhich said blower discharges, said casing being provided with airdischarge openings on .the opposite side of said group of cylin-,

ders from saidconduit, and curved bafile plates interposed between thecylinders of said group and extending partially around the same todirect the airfrom said conduit into close proximity to the cylinderwalls and between said fins.

having a plurality of cylinders with exhaust ports; the-combination ofan air propeller; an air-conduit between said air propeller and theengine; an air discharge casing surroundin said engine on one sidethereof and provided with a plurality of openings on the opposite sidethereof with a greater number of "openings adjacent said exhaust ports;-and means for guiding cooling air between the several cylinders towardsaid openings in said casing.

In testimony whereof, I aflix my signature.

'oARL P. BROCKWAY.

ed with heat radiating fins dis- 7, In an air cooling system for gasengines

